Improvement in cake-pans



NITRiol STATES "PATENT Orifice.A

`JOHN HARRYsMIrH, on BROOKLYN, NRW YORK. y

IM PROVEM ENTMI N CAKE-PANS.

Specication forming part of Letters Patent No. 105.991, dated August 2, 1870.

To all whom, it may concern/.-

Be it known that I, JOHN HARRY SMITH, of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Cake-Pans; and I do hereby declare that the following is a full, clear, and exact description thereof, which willV enable othersskilled in the art to make and use the same, reference being had to the accompanying drawings, forming partv of this specification.

y This invention relates to improvements in cake-pans; and itconsists in improvements in the manufacture of cake-pans, whereby a deepstalnped octagonal pan with nearly vertical sides is produced from a disk of sheet metal, as hereinafter more fully specified.

Figure l is a sectional elevation of a pan constructed according to my improvements, and Fig. 2 is a section of the pan in the form to which I reduce it previous tothe finishing operation. Fig.` 3 isa section of an octagonal p pan such as now made.

shallow, and the angle formed by the sides and bottom has been very obtuse, owing to the inability, up to the present time, of manufacturers of these goods to stamp them deeper and with more nearly vertical sides in this form without tearing and breaking the metal. All octagonal pans made up to this time have been struck wholly in octagonal dies, which cut and tear the metal atrthe corners, if attempts are made to continue the operation beyond one blow, to deepen them and change the form of the sides, or draw them more nearly tothe vertical line than may be done by one or more blows of the-drop or press. I have therefore adopted the plan of drawing the disk of metal first to the required depth and angle for the sides in circular dies by as many operations as may be preferred in the ordinary way of drawing then1that is, first Vdrawing them a part of the required depth in dies of the size that the upper part of the pan is to have or a little larger, then subjecting them to smaller dies for the continuation ofthe drawing process, and so ou, but preferably accomplishing the drawing into circular form, and to the required depth by two operations. Then I subject the circular pan A, Fig. 2, thus produced to one operation of a drawing process, having octagonal dies such as required for'the frame of the finished pan. In this way I ani enabled to produce a deep octagonal pan with nearly vertical sides, such as shown in the drawings, which has never before been produced by stamping or forming by dies.

The sectional Fig. 3 `clearly represents the difference between the octagonal pans heretofore made and those which I produce in the manner herein described.

The Ventilating-funnel B is attached, as in other pans, after the pan is shaped.

Having thus described my invention, I claim as new and desire to secure by Letters Patent A polygonal cake-pan, A, formed with nearly vertical sides and of a single sheet of metal, .H K

as specified.

Witnesses:

GRO.W. MARRE, ALEX. F. RORRR'rs.

J. HARRY sMirH.` 

